Cadogan West is found dead on the railroad tracks just outside the station, with seven of the ten technical drawings to build a submarine in his pockets. What seems like an easily-proved case of treachery on West's part is countered by testimony of all who knew him. `I would have trusted him as I trust myself,' says a colleague at the Woolwich Arsenal.
By analyzing the place where West's body was discovered, and using testimony from his fiancé, and testimony from the ticket agent at the Woolwich Station, and recalling the evidence in the pockets of the victim, Holmes devised another scenario for the crime. He and Watson had to break into the home of a foreign agent to formulate this scenario. "Some of these days you'll go too far, and you'll find yourself and your friend in trouble," remarked Inspector Lestrade, upon hearing of the trespass.
`The Adventure of the Bruce-Partington Plans' is a vintage Sherlock Holmes case, involving his brother Mycroft and Inspector Lestrade. The case is the fourth of the eight cases published in His Last Bow, a collection of Sherlock Holmes short stories published in 1917.